No, you can't do anything fancy with the notes, just post them or delete them.
"Sticky Notes" ?
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Happy to help! 
By the way, you can't make greasy notes either. 
I know that I can make a Forum Topic "sticky" so that it won't roll off the front page of my Group, the "Dan Heisman Learning Center" -- but is it possible to do the same thing with one of the Group Notes?
I'm a new Administrator, and I'd appreciate any help you old pros can give me. Thanks!